creating OSM account

Hello,
i am recruiting OSM players for my crew. Every person had trouble making an account. the activation email didn't work. only when we signed in via Facebook.
Today a new player wanted to creat an account. we had the same trouble, but this was even worse. when he downloaded the app, his playstore logged him in on his google-account and put him in a competition without asking! now he can't join my competition, so i made another account for him. with this new account, he joined my competition, but now he can't play OSM via the app wich is very annoying. We have tried to delete it and download it again. but every time google play logs him on his google account which is the wrong one.
can someone help me with this?

First I want to point out that we never handle things with 3rd party's, only the manager himself can request help and in this case he needs to send a email to our Dutch support team: NL.support@onlinesoccermanager.com

Did you read our osm terms of use?
We have one term 4. You may not babysit accounts of friends or relatives. This includes taking over the account of someone who is quitting the game. Both are unacceptable.